LED product knowledge summary

LED furniture, led highbay light, hotel lighting LED, LED lighting stores, and other areas of the individual attack, LED jewelry lighting, cabinet lighting, LED lamp LED warehouse more segmentation fields such as permeability plow deeper. LED has the light is downy, no stimulation, color is rich, small thermal radiation, easily hidden installation, etc. LED into LED display, LED lighting, LED backlight; Chip, encapsulation, application. LED lighting application products in (global), major is given priority to with family, accounts for about 39%, followed by the office and 18% of medical institutions, the third big market is outdoor lighting, about 12% of LED application of municipal engineering, backlit display, commercial lighting. LED lighting solutions, including lighting design, project construction management and late operation and maintenance, etc. Reasonable LED lighting design can improve the work efficiency and quality of life, unearthed LED other added value in addition to the energy saving, such as lights, modelling, etc advantages, the chang 'an grand theatre in Beijing using LED stage light, energy saving 80%, and more bright, also improve the traditional stage under the high temperature environment, LED lighting luminous characteristics than the traditional light source are easier to implement intelligent control, compared with the traditional energy-saving lamps, LED to add reasonable design move light at a lower cost, and the light is more stable, save power further, many LED application solutions including induction outside natural light environment automatic light adjustment function. Polycarbonate resin: degree of light transmission reached 90%, can reach the brightest light effect can reach homogeneous diffusion effects at the same time, another light management, distribution of space Angle of the output light, light and down light is also much easier to implement. Has good thermal stability, can be used under the high temperature of 1200 degrees continued, has excellent flame resistance, good penetrability, design flexibility, manufacturing companies are free to drop by the injection molding and other processes produce aesthetically pleasing lighting bulb and lamp shade, and the mechanical properties, heat aging resistance properties and optical properties are not affected, ultraviolet resistance stability, can prevent the material performance degradation caused by illumination (any material under the irradiation of uv light for a long time will be damaged, and the ultraviolet light can cause material decomposition yellow). Ruth tyrone resin. LED high pressure compared to the low voltage LED two competitive advantage: under the same output power, high voltage needed for the LED drive current is much lower than low voltage LED, which means that the heat dissipation aluminum housing cost is greatly reduced; High pressure LED to sharply reduce AC - DC conversion efficiency losses, and can reduce the cost of heat dissipation aluminum shell, so the cost of high voltage LED can bring the LED lighting lamps and lanterns and effectively reduce the weight, and more important lowered for the cooling system design requirements, can be thinner and lighter aluminum shell can meet the demand of LED lamps and lanterns, heat dissipation. Equipment manufacturer (OEM) indoor LED highbay light case distribution: office lighting requirements: 1) select the appropriate light source color temperature and color rendering index, and in office generally choose larger than 4000 k color temperature, color rendering index RA is greater than or equal to 75 2) lighting levels, different environment, different places, the lighting requirements are different, the office of intensity of illumination should satisfy the use requirement, generally 500-500 lx. 3) lighting uniformity: reasonable arrangement of lamps and lanterns, the intensity of illumination with, which maximizes the office, the difference between the minimum illuminance to average illuminance is less than a third of the average illuminance. 4) comfort and glare control: in the field of vision than when there is too much high brightness or brightness, will make a person feel dazzling glare, to prevent glare mainly is the effective measures to restrict light source brightness, reasonable decorate light source, such as the light source in the line of sight more than 45 degrees, forming shielding Angle or use the opaque material to keep out light. 5) security: main consideration structure safety of lamps and lanterns, electrical safety, lamps and lanterns is in line with the national standards, whether through the 3 c certification, etc. 6) energy saving and environmental protection: choose high photosynthetic efficiency light source, high efficiency, long service life, reasonable light distribution of lamps and lanterns, high performance, long life accessories and so on, with light general choice bat wing with the light, the light intensity can be evenly and wide distribution. LED office lighting lamps and lanterns in the advantages of: 1) environmental protection lamps and lanterns, protect the earth, the traditional fluorescent lamp contains large amounts of mercury vapor, if broken mercury vapour will volatilize lead in the atmosphere, but the LED fluorescent lamp is not applicable to also do not contain lead, mercury and LED product for environmental protection.2) high efficiency light-emitting, reduce the loss: traditional lamps and lanterns light emitting direction is 360 degrees, while the LED lamps and lanterns is directional, will not result in a loss of light 3) clean and comfortable, no noise, LED lamps and lanterns is does not produce noise, precision electronic instruments produced by choice, for apply for the library, office and so on. 4) the light is downy, eye protection: the traditional fluorescent lamp for alternating current (ac), so will produce 100-120 per second stroboscopic. Is to convert alternating current (ac) directly to dc LED lamps and lanterns, won't produce flashing phenomenon, protect your eyes. 5) no uv, no mosquito, won't produce uv LED lamps and lanterns, so it's not like traditional lamps and lanterns, there are a lot of mosquitoes around the lamp next to the source, the interior will be more clean. 6) adjustable voltage 80 v - 265 - v: traditional fluorescent lamp is lit by release of high voltage rectifier, when the voltage is not lit, and the LED lamps and lanterns is within the range of voltage can be light, also can adjust the brightness. 7) saves the energy, live longer: LED fluorescent lamp power consumption is half of the traditional fluorescent lamp, the life also is 10 times the traditional fluorescent lamp, can use for a long time without replacement, reduce artificial cost, more suitable for difficult to change the place. : 8) solid, use for a long time LED lamp body is used instead of the traditional glass epoxy resin, and stronger, even if it LED to the floor will not be easily damaged. In the field of LED indoor lighting, with a using 40 w fluorescent lamp tube 5000 based lighting factory as an example, according to the average electricity 12 hours every day calculation, tube total power of 200 kilowatts, daily electricity consumption is 2400 degrees, annual power consumption is 864000 degrees, calculated according to 1 RMB/degree, to generate electricity, 864000 yuan a year. If use 5000 16 w LED bulb to replace, according to the average electricity 12 hours every day calculation, tube total power of 80 kilowatts, daily electricity consumption is 960 degrees, annual power consumption is 345600 degrees, calculated according to 1 RMB/degree, to generate electricity, 345600 yuan a year. After replace the light source, save electricity, about 520000 a year. Business class lighting is widely used in hotels, supermarkets, office, shopping mall, metro, hospital, furniture, etc. LED outdoor lighting, LED indoor lighting, LED track traffic lighting, LED lamp lighting, LED landscape lighting, LED display lighting and gas station lamp light special field. LED light source has a small volume, vibration resistance, the dc low voltage, easy to adjust light and remote control, high photosynthetic efficiency, safety, color more, the advantages of long service life and environmental protection. 1) luminous efficiency: single luminous flux of LED co., LTD. Problem is recognized, its one of the solutions is to improve the luminous efficiency. Laboratory developed the LED 230 lm/w, commercialization of production and marketing of LED lights reach 85 lm/w, even higher 140 lm/w. 2) the heat dissipation problem: leds could work more than 70% of the electricity converted into heat, and with the traditional lighting device, white LED light-emitting part almost does not contain the infrared in the spectrum, so the heat can't rely on radiation release. Due to output leds luminous efficacy and life expectancy as nodes and the rise of temperature quickly, such as node temperature 10 degrees, photosynthetic efficiency and lifespan will all drop by more than half. LED heat dissipation firstly embodies in the LED chip work state, thermal effect will reduce the luminous efficiency of the chip, thereby lowering the luminous flux of LED. Thermal effect besides can reduce luminous efficiency of the chip itself, along with temperature rise, will also result in the emission wavelength of chip drift, making it and the excitation wavelength of phosphor is not matching, reduce the efficiency of phosphors maser, further reduce the luminous efficiency of white LED, phosphors will also accelerate ageing, seriously affect the components of the optical performance. Second LED heat dissipation problem largely depends on the device's packaging and packaging materials. To use multiple dense array of white light LED lighting system, due to the influence each other between modules, heat dissipation problems more serious, for his heat management, in addition to reduce thermal resistance tube core chip level, also should use high heat conductivity of packaging materials, design more reasonable heat sink, optimized driving power to reduce the thermal resistance of after encapsulation device, such as improve the device performance. 3) driving circuit, driving circuit main function is to convert ac voltage to constant current power supply. Suitable LED work light source driving circuit should be set, protection, control circuit and auxiliary power supply, sensor, passive components as encapsulating an independent entity relatively complete general-purpose components. 4) non imaging optics design. Due to the LED chip, small size, compact structure, the light emitting area is relatively smaller, he is a 180 - degree lambert body out of the light source, the intensity of light is directly proportional to the cosine of the distribution and the wide Angle, is the LED light source.Is formed on the surface light intensity of illumination increased as the emergent Angle of rapid attenuation. Places according to different applications and requirements, in view of the LED light source characteristics of the secondary optical design, so as to realize the light emitted from LED chip for plastic and change, especially in the presence of intensity distribution, it belongs to the category of non imaging optics design. He is concerned with light control and light distribution of energy utilization. 5) cost: such as flux 1000 lm, for incandescent lamp, cost less than 5 yuan RMB for compact fluorescent lamps, the cost is less than RMB 10, for the LED light source, with ten high power leds cost over 100 yuan RMB. 6) standard level: the LED in the product specification or the measurement on the lack of appropriate standards. 7) LED industry development is facing the challenge: the LED industry chain upstream of mainly includes the epitaxial wafer growth and chip manufacturing industry, the LED devices and LED encapsulation of middle reaches of the industry, LED highbay light application of downstream industries. According to incomplete statistics, China has reached more than 6000, is engaged in the LED business application products and supporting accounted for more than 5000, packaging enterprises accounted for 600, is engaged in the epitaxial wafer and chip manufacturing enterprises with more than 40. Chip of MOCVD equipment (production) the classroom lighting main indicators: desktop, on average, to maintain normal classroom illumination: greater than or equal to 300 lx, intensity of illumination evenness (minimum illumination/average illuminance) is greater than or equal to 0.7, the UGR unified glare values less than or equal to 19, lighting power degree is less than or equal to 9 w/square. Electronic rectifier, high frequency T8 rare earth tricolor phosphor powder, 36 w light source power, color temperature 5000 k, RA91, luminous flux 3200 lm; Energy conservation significantly, lighting energy saving is not equal to reduce the intensity of illumination, and requires the use of energy-saving technology, reduce the energy consumption and energy consumption of lighting technology indicators are: lighting power density (LPD) is the energy dissipation per unit area (W/square); The luminance distribution on the surface of the whole environment in line with the north American society to the classroom illumination brightness requirement.

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